Welcome to Wikipedia,

the free encyclopedia that anyone can edit.

6,833,995 articles in English

Overview · Searching · Editing · Questions · Help

Categories · Featured content · A–Z index

Today's featured article
Interior of Incapillo Incapillo is a Pleistocene-age caldera – a depression formed by the collapse of a volcano – in La Rioja Province, Argentina. It is part of the southernmost volcanic centre in the Andean Central Volcanic Zone (CVZ). Subduction of the Nazca Plate beneath the South American Plate is responsible for most of the volcanism in the CVZ. Volcanism commenced in the Incapillo region 6.5 million years ago, forming the high volcanic edifices of Monte Pissis, Cerro Bonete Chico and Sierra de Veladero. Incapillo is known to have erupted the Incapillo ignimbrite 0.52 ± 0.03 and 0.51 ± 0.04 million years ago; this has a total volume of about 20.4 cubic kilometres (4.9 cu mi). A caldera with dimensions of 5 by 6 kilometres (3.1 mi × 3.7 mi) formed during the eruptions. Later volcanism generated more lava domes within the caldera and a debris flow in the Sierra de Veladero. The lake within the caldera may overlie an area of ongoing hydrothermal activity. (Full article...) Recently featured: Ronald Reagan Marasmius rotula The Ecstatic Archive By email More featured articles About
Did you know...
St. Anne's Church, Moxi ... that two European missionaries stationed in a Catholic church (pictured) were beheaded by Chinese Red Army soldiers led by Mao Zedong in 1935? ... that Felipe Lara's Pulitzer finalist Double Concerto turns its soloists into a "many-tentacled creature"? ... that birds have more species than mammals, but are relatively more uniform in appearance? ... that in addition to her popular manga series Delicious in Dungeon, Ryoko Kui has drawn fan art of the games Baldur's Gate, Pathfinder and Planescape: Torment? ... that one Italian broadcaster delayed airing Eurovision Song Contest 1974 by two months to avoid influencing an upcoming divorce law referendum? ... that Irish Gaelic footballer Jude McAtamney became interested in American football after reading a Twitter post in 2020, and became an NFL player in 2024? ... that Tim Robards returned to Neighbours in Episode 8851, two years after he had to quit his role early? ... that Franz Liszt's female admirers would fight over his cigar stubs and coffee dregs as souvenirs? Archive Start a new article Nominate an article

In the news

Narendra Modi

In the Indian general election, the National Democratic Alliance, led by Prime Minister Narendra Modi (pictured), is re-elected with a reduced majority.
The Boeing Starliner spacecraft conducts its first crewed flight, carrying two astronauts to the International Space Station.
The CNSA Chang'e 6 completes sampling and takeoff from the far side of the Moon.
Claudia Sheinbaum is elected President of Mexico.

On this day...

June 12: First day of Shavuot (Judaism, 2024); Dia dos Namorados in Brazil; Loving Day in the United States (1967)

Boeing 777

1798 – Following the successful French invasion of Malta, the Knights Hospitaller surrendered Malta to Napoleon, initiating two years of occupation.
1864 – Union general Ulysses S. Grant pulled his troops out of the Battle of Cold Harbor in Hanover County, Virginia, ending one of the bloodiest, most lopsided battles in the American Civil War.
1914 – As part of the Ottoman Empire's policies of ethnic cleansing, Turkish irregulars began a six-day massacre in the predominantly Greek town of Phocaea.
1954 – Dominic Savio, who was 14 years old at his death in 1857, was canonized by Pope Pius XII, making him one of the youngest non-martyred saints in the Catholic Church.
1994 – The Boeing 777 (pictured), the world's largest twinjet, made its maiden flight.

Æthelflæd (d. 918)
Samuel Cooper (b. 1798)
Eugénie Brazier (b. 1895)
Milorad Petrović (d. 1981)

More anniversaries:

Today's featured picture
Wikipedia:POTD row/June 12, 2024

Other areas of Wikipedia

Community portal – The central hub for editors, with resources, links, tasks, and announcements.
Village pump – Forum for discussions about Wikipedia itself, including policies and technical issues.
Site news – Sources of news about Wikipedia and the broader Wikimedia movement.
Teahouse – Ask basic questions about using or editing Wikipedia.
Help desk – Ask questions about using or editing Wikipedia.
Reference desk – Ask research questions about encyclopedic topics.
Content portals – A unique way to navigate the encyclopedia.

Wikipedia's sister projects

Wikipedia is written by volunteer editors and hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other volunteer projects: